Fix call stack sampling for the case when native callback invokes JS function

src/profile-generator.cc

Index: src/profile-generator.cc
diff --git a/src/profile-generator.cc b/src/profile-generator.cc
index cc86724437f155d537609f947bd103601b0f37c2..8428303afe6da9daf82dddcb43aa0d827a8d4be6 100644
--- a/src/profile-generator.cc
+++ b/src/profile-generator.cc
@@ -655,7 +655,8 @@ void ProfileGenerator::RecordTickSample(const TickSample& sample) {
   CodeEntry** entry = entries.start();
   memset(entry, 0, entries.length() * sizeof(*entry));
   if (sample.pc != NULL) {
-    if (sample.has_external_callback) {
+    if (sample.has_external_callback && sample.state == EXTERNAL &&
+        sample.top_frame_type == StackFrame::EXIT) {
       // Don't use PC when in external callback code, as it can point
       // inside callback's code, and we will erroneously report
       // that a callback calls itself.